JPS6172909A - Device for adjusting air passed through burner - Google Patents

Abstract

PURPOSE:To prevent poor combustion of fuel by a method wherein an air passage guiding plate for changing the flow of air passage at the outer circumference of a combustion chamber in response to the variation in temperature at the combustion chamber is arranged at an air passage chamber at the outer circumference of the combustion chamber. CONSTITUTION:When the temperature of combustion and heating in a burner 5 is low and a combustion chamber 1 is cooled by surrounding air passing through an air passage chamber to cause the temperature of the combustion chamber 1 to be decreased, the direction of the flow of the surrounding air passing through the air passage chamber at the outer circumference of the combustion chamber 1 is varied and guided by an air passing guide plate 3 in such a way as the passed air is hard to strike against the combustion chamber 1. In turn, when the temperature of combustion and heating in the burner is high and the temperature of the combustion chamber 1 becomes high, the direction of flow of the surrounding air passing through the air passing chamber at the outer circumference of the combustion chamber 1 is varied by the air passing guide plate 3 to the condition in which the passing air may easily strike against the combustion chamber 1. With the foregoing, since the combustion chamber 1 is not cooled or overheated more than required, a stable combustion can be attained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is applicable to burner passing wind yAf! This relates to a fi device and can be used for drying grains, etc.

Problems to be Solved by the Invention In a dryer for drying grain, a burner installed at the front of the dryer combusts combustion fuel while jetting it forward in a combustion chamber, and the combustion flame is sent to the rear of the dryer. The hot air is drawn across the drying room by being sucked in by the exhaust fan, and the crushed material flowing down through the drying room is transported to the drying room.
,-Vinegar 4Z N! The combustion heating temperature of the burner in the city varies widely depending on the amount of grain to be dried, the outside temperature, etc. For this reason, when the combustion heating temperature of the burner' is low, the combustion chamber is cooled by the outside air passing through the ventilation chamber on the outer periphery of the combustion chamber, which deteriorates the vaporization state of the combustion fuel. If poor combustion occurs or the combustion heating temperature of the burner is high, the combustion chamber will be overheated more than necessary unless the combustion chamber is cooled with outside air passing through the ventilation chamber. As a result, the vaporization state of the combustion fuel may become poor, resulting in poor combustion conditions.

Means for Solving the Problem The present invention provides a ventilation chamber (2) on the outer periphery of a combustion chamber (1) in which fuel is combusted while being injected forward, and a temperature change in the combustion chamber (1) allows the combustion chamber to (1) The structure of the burner passing air adjustment device is provided with a ventilation guide plate (3) that changes the flow of air around the outer circumference.

Functions and Effects of the Invention The combustion fuel is combusted while being jetted forward in the combustion chamber (1), and is blown as hot air by the wind flowing around the outer periphery of the combustion chamber (2), but the combustion heating temperature of the burner is low and this Therefore, when the combustion chamber (1) section is cooled by the outside air passing through the ventilation chamber (2) and the temperature of this combustion chamber (1) section becomes low, the ventilation chamber at the outer periphery of this combustion chamber (1) (2) changes and guides the flow direction of the outside air passing through the combustion chamber (1) using a ventilation guide plate (3) to a state where the passing wind is difficult to hit the combustion chamber (1);
In addition, the combustion heating temperature of the burner is high, so the combustion chamber (1
) When the temperature in the combustion chamber (1) becomes high, the flow direction of the outside air passing through the ventilation chamber (2) on the outer periphery of this combustion chamber (1) is controlled by the ventilation guide plate (3). By changing the state to be easily exposed to the passing air, the combustion chamber (1) is not cooled more than necessary or overheated, so that combustion is always carried out in a stable combustion state.

Example In the illustrated example, the dryer (4) is equipped with a burner (5) at the front.
), an operation box (6) and a grain raising machine (7)'*,
It has an exhaust fan (8) at the rear, and has a drying room, a storage room, etc. inside.

The burner (5) is mounted on a support plate (10) fixed to the bottom of a box-shaped case (9) consisting of a combustion chamber (1) at the front and a blowing chamber (22) at the rear. A ventilation chamber (2) is formed between the outer periphery of the burner (5) and the inner wall of the burner case (9) through which outside air is ventilated. The burner case (9) is detachably attached to the front part of the dryer a (4), and the burner case (9) is attached to the front part of the dryer a (4).
By sucking the hot air generated by the exhaust fan (8) at the rear, the hot air crosses the drying chamber, and the grains flowing down inside the drying chamber are dried.

The rear blowing chamber (22) is a cylindrical blowing chamber that blows combustion air. It has a cylinder (11), a motor (12) is mounted inside this blower cylinder (11), fan-shaped ventilation guide plates (3) are installed at the upper and lower parts of the outer periphery, and a mounting plate (13) is attached to this outer periphery. This mounting plate (13) is made of a shape memory alloy whose shape changes depending on the temperature change in the combustion chamber (1), and when the temperature of the combustion chamber (1) is low. The ventilation guide plate (3) is held in an upright position by the mounting plate (13), and when the temperature of the combustion chamber (1) rises above a certain temperature, the ventilation guide plate (3) (13) collapses due to deformation, changing the flow direction of the outside air flowing through the ventilation chamber (2), and returns to its original shape when the temperature of the combustion chamber (1) decreases. The ventilation guide plate (3) is held in an upright position.

The front part of the combustion chamber (1) has a combustion tube (14) fixed to the front part of the blower tube (II), and this combustion tube (14) has a three-stage dish shape when viewed from the side and has an opening in the center. A guide tube (15) having a cylindrical tip is fixed to this opening, and the guide tube (15) is fixed to the opening.
The motor (12) has an ejection disk (16) having an ejection hole for ejecting and burning the vaporized fuel on the outer periphery of the motor (15), and an ignition heater (I7) that ignites the ejected fuel near the outer periphery.
At the end of the shaft, there are a scattering body (19) that rotates and scatters in response to the fuel supplied from the fuel nozzle (18), and a vaporizer cylinder (2).
0) is fixed, and this vaporizing cylinder (20) is shaped like a pot, and a vaporizing disc (21) whose diameter expands diagonally forward is fixed to this vaporizing cylinder (20), and this vaporizing disc (21) and Vaporizer cylinder (2
0), a small gap is provided between the two and 0) through which fuel can flow. A certain gap is provided between the inclined portions of the ejection disk (16) and the vaporization disk (22), so that the vaporized fuel is ejected as a combustion flame.

Combustion air is supplied from the blower (23) provided on the outside of the bottom of the burner case (9) through the blower duct to the blower tube (I).
I) It is a configuration that blows air into the interior.

Combustion fuel is supplied from the fuel tank (24) installed at the front of the dryer (4) to the supply pipe, the fuel pump, and the fuel nozzle (1 day) that is directed above the scattering body (18). After that, the particles are ejected onto the outer periphery of the flying object (19).

By operating the front part of the dryer (4),
When this dryer (4) starts, the exhaust fan (8) at the rear rotates, and at the same time, outside air is sucked in from the ventilation chamber (2), the ignition heater (17) of the /Hena (5) is energized. The ignition heater (17) is then heated to red heat, and the combustion fuel is passed from the fuel tank (24) through the fuel pump etc. to the fuel nozzle (18).
) is supplied to the outer periphery of the scattering body (19), and this scattering body (I
s) to the inner wall of the vaporizer cylinder (20), and this vaporizer cylinder (2
0) The vaporizer cylinder (20) and vaporizer plate (21) are removed while flowing down the inner wall.
A part of this ejected fuel scatters onto the red-hot ignition heater (17) and automatically ignites to start combustion, and the combusting flame heats the vaporizing cylinder (20). , the fuel flowing down in this vaporization cylinder (20) is vaporized, and this vaporized fuel is formed between the injection hole of this injection a (I8) and this injection 1 (1G) and this vaporization a (21). A combustion flame is ejected from the gap, and this combustion flame becomes hot air, which is sucked by the exhaust fan (8) at the rear of the dryer (4) and crosses the drying room. The grains housed in the dryer are dried by being exposed to the hot air while flowing down the drying chamber, and when the grains reach a specified moisture content, the dryer is automatically controlled by the operation box (6). 4), but when the combustion heating temperature of the burner (5) is high, the combustion tube (14) is heated by the combustion flame, and this smoking tube (14) is automatically stopped.
4) When the temperature of the section rises above a certain temperature, the blower tube (
11) The ventilation guide plate (3) attached to the outer periphery by the mounting plate (13) falls forward due to the deformation of the mounting plate (13), and the ventilation guide plate (3) is held in the fallen state;
The flow direction of the outside air passing through the ventilation chamber (2) changes, and the outside air hits the combustion tube (14) well, thereby preventing abnormal over-ripening of the 1 nuclear combustion chamber (1). Ru. In addition, at the start of drying work or when the combustion heating temperature of the burner (5) is low, the temperature of the combustion tube (14) does not rise above a certain temperature, so the ventilation guide plate (3) is in an upright position. This prevents the combustion chamber (1) from being abnormally cooled by the outside air flowing through the ventilation chamber (2). Regardless of whether the combustion temperature of the burner (5) is low or high, the burner (5) always burns in a stable combustion state.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an enlarged side sectional view, FIG. 2 is an enlarged rear view, and FIG. 3 is a partially cutaway side view of the dryer. In the figure, reference numeral (1) indicates a combustion chamber, (2) indicates a ventilation chamber, and (3) indicates a ventilation guide plate. Name of Patent Appearance University Representative Iseki Beki Co., Ltd. Masataka Iseki

Claims (1)

[Claims] The ventilation chamber (2) on the outer periphery of the combustion chamber (1), which burns fuel while jetting it forward, changes the flow of ventilation on the outer periphery of the combustion chamber (1) depending on the temperature change in the combustion chamber (1). A burner passing air regulating device comprising a ventilation guide plate (3).